Klein Marine Systems, Inc. MA-X VIEW 600, Operation And Maintenance Manual

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C-2
APPENDIX C Compass Calibration
MA-X View 600 Sonar System Operations and Maintenance Manual P/N 11210097, Rev. 00
9.
Enter the following command to start the calibration process.
$SI:SMC1$CCB
10.
Perform the calibration movements:
• Make sure the towfish is as far away from large metal objects and power
wiring as possible.
• Move the towfish to point in as many locations as possible for
approximately three minutes. The manufacturer’s instructions (Xsens
document MT0202P) suggests that it might be helpful to picture trying to
paint the inside of a balloon with the nose of the towfish to visualize the
motions needed).
• At some point, the towfish should move through all horizontal orientations
(a full 360 degree circle).
11. Enter the following command to end the calibration process:
$SI:SMC1$CCE
12. Start the TPU Updater software.
13.
Enter the appropriate (usually the default) TPU address and select View TPU Log
File / TPU Serial Log.
14. Scroll to the bottom of the Notepad window.
15. Search up for lines containing four stars "****" and look for lines like these:
***** IMU response #CCE
***** IMU response #ICCSTAT: 0
***** IMU response #DDT: 1.0
16.
Determine if the result is successful. To do this, first look at the ICCSTAT entry
and then refer to Table C-1. A successful calibration will return the value 0. Any
other number represents a failure and it will be necessary to return to step 9 and
repeat the calibration process. If the ICCSTAT value is zero, examine the DDT
value. A perfect score is 1.0 and the objective is to get that or a result close to it. If
the number is high, it is advised to proceed to step 9 and repeat the process.
NOTE As experience is gained, the procedure may be updated to show a
numeric range that is acceptable. The intent of calibration is to get as close
to 1.0 as is possible. This may be affected by the electromagnetic noise
environment in which the calibration is performed.